Secretase
[医]分泌酶
🗣️ 情景例句
How do you spend your leisure time?
你是怎样打发业余时间的？
This is a rather old house. It needs painting.
这房子挺旧的，得刷一下才行。
Byrd now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight.
伯德这时知道他能够顺利飞抵300英里以外的南极了，因为前面再没有山了。